Aggregate statistics are now computed in the database.

src/main/java/de/dennisguse/opentracks/data/models/Distance.java

@@ -19,6 +19,8 @@ public record Distance(double distance_m) {
             return Distance.of((double) distance_m);
         }
     }
+
+    @Deprecated //TODO Remove
     public static Distance of(String distance_m) {
         return of(Float.parseFloat(distance_m));
     }

src/main/java/de/dennisguse/opentracks/data/models/Speed.java

@@ -20,6 +20,7 @@ public record Speed(double speed_mps) {
         return new Speed(speed_mps);
     }
 
+    @Deprecated //TODO Remove
     public static Speed of(String speed_mps) {
         return of(Float.parseFloat(speed_mps));
     }

src/main/java/de/dennisguse/opentracks/data/models/Statistics.java

@@ -35,9 +35,6 @@ public record Statistics(
     }
 
     public Speed getAverageSpeed() {
-        if (totalTime.isZero()) {
-            return Speed.ZERO;
-        }
         return Speed.of(totalDistance, totalTime);
     }